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The voltage-fed Z-source inverter/quasi-Z-source inverter (qZSI) has been presented suitable for photovoltaic (PV) applications mainly because of its single-stage buck and boost capability and improved reliability. This paper further addresses detailed modeling and control issues of the qZSI used for distributed generation (DG), such as PV or fuel cell power conditioning. The dynamical characteristics...
This paper presents a family of high frequency transformer isolated impedance-source (Z-source) inverters and corresponding control method for DC to AC power conversion applications. The original single-stage Z-source inverter incorporates a unique passive impedance network coupled between the inverter main circuit and power source, thus overcoming some conceptual limitations of conventional voltage-fed...
This paper presents several single-phase non-isolated semi-Z-source inverters for small distributed power generator in grid-connected applications with low cost and doubly grounded features. These semi-Z-source inverters employ the Z-source/quasi-Z-source network and only two active switches to achieve the same output voltage as the traditional voltage-fed full-bridge inverter. The two active switches...
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